Hourglass Cold Brew Coffee Maker System Brews smooth, rich tasting, healthier coffee easily with no cords and no electricity required Produces a coffee extract with 69.9 percent less acid than hot-brewed coffee in certified lab tests Extract stays fresh in fridge for 2 weeks; just add hot water for fast cup anytime Portable and rugged, the coffee maker is BPA free Comes with a lifetime stainless-steel filter